[GAMBIT] gambit global geometric tolerance

alireza2475 · July 17, 2010, 02:53

i am modeling a micro geometry in the gambit.
when i want to mesh a face, gambit warns me as:
mesh size on face *** is smaller than geometric tolerance ....
i Know that the default global geometric tolerance of gambit is 1e-6 and the solution of this problem is to define it in a larger scale like mm.
but i can not change the scale, the geometry is so complicated and i cant really model it again.
i want to know if there is any way to change the global geometric tolerance in Gambit to some thing like 1e-7 ?
Help me please.
thank u.

-mAx- · July 19, 2010, 02:23

Gambit has no unity.
If you are working in micro-m, then multiply all your geometry with factor 1e6.
For instance if you have a cylinder with radius 10 mu-m with an height of 100, thje create a cylinder 10x100.
You will need to scale your geometry in the solver, but later and independant to gambit

July 17, 2010, 02:53	gambit global geometric tolerance	#1
alireza2475 New Member alireza Join Date: Jul 2010 Posts: 12 Rep Power: 16	i am modeling a micro geometry in the gambit. when i want to mesh a face, gambit warns me as: mesh size on face *** is smaller than geometric tolerance .... i Know that the default global geometric tolerance of gambit is 1e-6 and the solution of this problem is to define it in a larger scale like mm. but i can not change the scale, the geometry is so complicated and i cant really model it again. i want to know if there is any way to change the global geometric tolerance in Gambit to some thing like 1e-7 ? Help me please. thank u.

July 19, 2010, 02:23		#2
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	Gambit has no unity. If you are working in micro-m, then multiply all your geometry with factor 1e6. For instance if you have a cylinder with radius 10 mu-m with an height of 100, thje create a cylinder 10x100. You will need to scale your geometry in the solver, but later and independant to gambit __________________ In memory of my friend Hervé: CFD engineer & freerider

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